Thinking about getting Stillen High Flow Cats. Can i get more insight on this like will it make the exhaust louder because thats what im aiming for but not so loud while maintaining that beautiful exhaust note that i get at around 3K RPM's. Can HFC do that for me or is their a better sugestion?

 

Get the Fast Intentions Resonated High Flow Cats!!!!!!!

It will be EXACTLY what you are looking for.

 

^I agree with Bud. Just installed them on my '08 S coupe.

 

I have Invidia HFC's and exhaust and It N-Bull sounds great

 

Don't get HFC with the stock exhaust. It will blow out your muffler. Did this twice...

 

What HFC's did you install and were they R HFC's?

 

The CNT HFC's, non resonated. The FI ones might work because they are 300 cel not 200 cel and resonated, but I still doubt the muffler will hold up long. Trust me it sounds absolutely awful when the baffling in the muffler blows out.